Removed duplicate entries in media.gyp.
Removed duplicate entries in media.gyp.

TBR=mark

Review URL: http://codereview.chromium.org/108039

git-svn-id: http://src.chromium.org/svn/trunk/src@15341 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 64ad08d9e6d5f944fafa876b397c5d36d8a00cd6
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser